FR2663211A1 - Mechanism enabling an ergonomic seat [sitting portion of a seat] to tilt between a working position and a listening position - Google Patents

Mechanism enabling an ergonomic seat [sitting portion of a seat] to tilt between a working position and a listening position Download PDF

Info

Publication number
FR2663211A1
FR2663211A1 FR9007686A FR9007686A FR2663211A1 FR 2663211 A1 FR2663211 A1 FR 2663211A1 FR 9007686 A FR9007686 A FR 9007686A FR 9007686 A FR9007686 A FR 9007686A FR 2663211 A1 FR2663211 A1 FR 2663211A1
Authority
FR
France
Prior art keywords
seat
slides
lugs
listening
ergonomic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR9007686A
Other languages
French (fr)
Other versions
FR2663211B1 (en
Inventor
Moreau Franck
Hocquet Alain
Houillon Christian
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR909007686A priority Critical patent/FR2663211B1/en
Publication of FR2663211A1 publication Critical patent/FR2663211A1/en
Application granted granted Critical
Publication of FR2663211B1 publication Critical patent/FR2663211B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/0257—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame slidingly movable in the base frame, e.g. by rollers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/023—Reclining or easy chairs having independently-adjustable supporting parts the parts being horizontally-adjustable seats ; Expandable seats or the like, e.g. seats with horizontally adjustable parts

Abstract

The present invention relates to a mechanism which enables an ergonomic seat to adopt two different inclinations in order to respect the listening/resting position and the working position of a user by a simple forward or backward movement of his torso. The mechanism comprises sleeves [bushes] with needles (8) free to rotate on projections (2) fixed to an immobile support (1). Plates (3) on which guides [slides] (4) are located are mounted either side of the seat (5). As we reach the ends of the guides (4), the sleeves with the needles (8) stop the circular movement of the seat (5) in the working position or listening position. The mechanism of the invention is adaptable to all kinds of chairs for school, professional or home use. Moreover it can prevent or cure back ache.

Description

La présente invention concerne un mécanisme qui permet à une assise ergonomique de prendre deux inclinaisons différentes dans le but de respecter la position d'écoute/repos et la position de travail d'un utilisateur par simple mouvement de son buste en avant ou en arrière. The present invention relates to a mechanism which allows an ergonomic seat to take two different inclinations in order to respect the listening / rest position and the working position of a user by simple movement of his chest forward or backward.

L'assise des chaises traditionnelles est horizontale. The seat of traditional chairs is horizontal.

L'angle tronc/cuisse de l'utilisateur assis sur ces dernières est insuffisamment ouvert. Cela provoque une flexion trop importante de sa courbure lombaire. The trunk / thigh angle of the user seated on them is insufficiently open. This causes too much flexion of his lumbar curvature.

Des mécanismes d'inclinaison d'assise offrant les positions de travail et d'écoute sont déjà connus. Seat tilt mechanisms offering working and listening positions are already known.

Cependant, ces mécanismes ne permettent à l'assise de s'incliner vers l'avant ou vers l'arrière que sous l'impulsion donnée par l'utilisateur ou par le biais d'un ou plusieurs réglages. However, these mechanisms allow the seat to tilt forward or backward only under the impulse given by the user or through one or more adjustments.

Le mécanisme selon l'invention permet de remédier à ces inconvénients. The mechanism according to the invention overcomes these drawbacks.

Son principe général est que l'inclinaison de l'assise se fait sur deux couples d'appuis mobiles. Its general principle is that the inclination of the seat is done on two pairs of mobile supports.

Ces deux couples d'appuis permettent à l'assise de décrire un mouvement circulaire autour d'un centre de rotation fictif placé au-dessus de cette assise. Ce mouvement s'apparente à celui d'une balançoire. These two pairs of supports allow the seat to describe a circular movement around a fictitious center of rotation placed above this seat. This movement is similar to that of a swing.

I1 permet les deux positions décrites ci-après. I1 allows the two positions described below.

La première est la position de travail avec l'assise inclinée d'environ vingt degrés vers l'avant. Cette inclinaison d'environ vingt degrés permet à l'utilisateur d'avoir un angle tronc/cuisse suffisamment ouvert pour diminuer la flexion de sa courbure lombaire. The first is the working position with the seat tilted about twenty degrees forward. This inclination of about twenty degrees allows the user to have a trunk / thigh angle sufficiently open to reduce the flexion of his lumbar curvature.

La seconde est la position de repos ou d'écoute avec l'assise inclinée d'environ cinq degrés vers l'arrière. Cette seconde position nécessite l'emploi d'un repose-pied et d'un support lombaire et se justifie par le fait qu'elle diminue la pression intra-discale de l'utilisateur. The second is the rest or listening position with the seat tilted about five degrees backwards. This second position requires the use of a footrest and a lumbar support and is justified by the fact that it reduces the intra-disc pressure of the user.

Dans les deux cas, afin d'éviter le glissement du séant et de diminuer l'effort sur les appuis plantaires de l'utilisateur, il faut que la forme de l'assise soit conçue de manière à bloquer ses cols de fémurs grâce à une partie pentue fortement accentuée. In both cases, in order to avoid the sliding of the seat and to reduce the effort on the plantar supports of the user, it is necessary that the shape of the seat is designed so as to block his necks of femurs thanks to a steep part strongly accentuated.

Ce mécanisme d'inclinaison se compose de deux parties distinctes: une première, solidaire de l'assise mobile. composée de deux plaques fixées symetriquement de chaque côté de l'assise et comportant chacune deux glissières placées de façon symétrique par rapport à un axe vertical lorsque l'assise est horizontale, et une seconde, solidaire du piétement. composée de deux couples d'ergots.  This tilting mechanism consists of two separate parts: a first, secured to the movable seat. composed of two plates fixed symmetrically on each side of the seat and each comprising two slides placed symmetrically with respect to a vertical axis when the seat is horizontal, and a second, integral with the base. composed of two pairs of lugs.

Les ergots guident les glissières obliques de chaque plaque et permettent à l'assise de s'incliner vers l'avant ou vers l'arrière.  The lugs guide the oblique slides of each plate and allow the seat to tilt forward or backward.

Selon une variante, chacune des deux plaque munie de glissières peut être remplacée par un arceau qui reposera sur deux ergots. According to a variant, each of the two plates provided with slides can be replaced by a hoop which will rest on two lugs.

La figure 1 représente, en coupe, l'assise selon l'invention, inclinée d'environ 20 degrés vers l'avant et d'environ 5 degrés vers l'arrière.  Figure 1 shows, in section, the seat according to the invention, inclined about 20 degrees forward and about 5 degrees rearward.

La figure 2 représente, en vue de dessus éclatée, cette même assise inclinée d'environ 20 degrés vers l'avant. Figure 2 shows, in exploded top view, the same seat inclined about 20 degrees forward.

La figure 3 représente, en coupe, une variante de cette assise. Figure 3 shows, in section, a variant of this seat.

L'assise représentée sur les figures 1 et 2 comporte des douilles à aiguilles (8) libres de rotation sur les ergots (2) fixés sur un support immobile (1). The seat shown in Figures 1 and 2 includes needle sleeves (8) free to rotate on the pins (2) fixed on a stationary support (1).

Les plaques (3) sur lesquelles se trouvent les glissières (4) sont fixées de facon symétrique de part et d'autre sous le siège (5) de manière à ce que ces mêmes glissières (4) soient les unes en face des autres et orientées vers l'intérieur du siège. La position de deux glissières (4) sur une même plaque (3) est telle que les surfaces sur lesquelles se trouvent leur point de contact avec les douilles à aiguilles (8) sont symétriques par rapport à un axe vertical lorsque le siège est horizontal et tangentes à un même arc, et leur longueur détermine les inclinaisons du siège (5). The plates (3) on which the slides (4) are located are symmetrically fixed on either side under the seat (5) so that these same slides (4) are opposite one another and oriented towards the inside of the seat. The position of two slides (4) on the same plate (3) is such that the surfaces on which their point of contact with the needle bearings (8) is found are symmetrical with respect to a vertical axis when the seat is horizontal and tangent to the same arc, and their length determines the inclinations of the seat (5).

En butant sur les extrémités des glissières (4), les douilles à aiguilles (8) arrêtent le mouvement circulaire du siège (5) dans la position de travail ou d'écoute. By abutting on the ends of the slides (4), the needle sleeves (8) stop the circular movement of the seat (5) in the working or listening position.

Dans la forme de réalisation selon la figure 3, deux arceaux (9) solidaires du siège (5) reposent chacun sur deux douilles à aiguilles (8), libres de rotation sur les ergots (2) fixés sur le support (12), qui guident le déplacement circulaire des arceaux (9) et limitent l'inclinaison du siège (5) en butant sous celui-ci. In the embodiment according to Figure 3, two arches (9) integral with the seat (5) each rest on two needle sleeves (8), free to rotate on the pins (2) fixed on the support (12), which guide the circular movement of the arches (9) and limit the inclination of the seat (5) by abutting under it.

La cage à aiguilles (10) libre de rotation sur l'ergot (11), positionnée sur la face intérieure de chaque arceau (9), améliore la stabilité latérale du siège (5) et le rend dépendant des supports fixes (12). The needle cage (10) free to rotate on the lug (11), positioned on the inner face of each arch (9), improves the lateral stability of the seat (5) and makes it dependent on the fixed supports (12).

Quel que soit le mécanisme choisi, le siège (5) a une forme bien précise. La partie pentue (5a) constituant le creux recevant les cols de fémurs, est fortement accentuée. Whatever the mechanism chosen, the seat (5) has a very precise shape. The sloping part (5a) constituting the hollow receiving the necks of the femurs, is strongly accentuated.

Le mécanisme selon l'invention est adaptable sur toutes sortes de sièges pour un usage scolaire, professionnel ou domestique. The mechanism according to the invention is adaptable to all kinds of seats for school, professional or domestic use.

En outre, il permet de prévenir ou de guérir les lombalgies.  In addition, it helps prevent or cure low back pain.

Claims (5)

REVENDICATIONS 1) Assise ergonomique décrivant un mouvement circulaire autour d'un centre de rotation fictif placé au-dessus de cette assise caractérisée en ce qu'elle est constituée de deux couples d'ergots (2) solidaires d'un piètement (1) et en ce que deux guides fixés sous le siège (5) ont pour fonction de servir d'appuis mobiles à ces ergots (2). 1) Ergonomic seat describing a circular movement around a fictitious center of rotation placed above this seat characterized in that it consists of two pairs of lugs (2) secured to a base (1) and in what two guides fixed under the seat (5) have the function of serving as mobile supports for these lugs (2). 2) Assise selon la revendication 1 caractérisée en ce que deux plaques (3) sont fixées symétriquement de chaque côté sous le siège mobile (5) et comportent chacune deux glissières (4) symétriques par rapport à un axe vertical lorsque le siège est horizontal, placées les unes en face des autres, orientées vers l'intérieur du siège, et en ce que les ergots (2) guident les glissières obliques (4) de chaque plaque (3) et permettent, en butant contre les extrémités des glissières (4) de limiter l'inclinaison du siège (5). 2) Seat according to claim 1 characterized in that two plates (3) are symmetrically fixed on each side under the movable seat (5) and each comprise two slides (4) symmetrical with respect to a vertical axis when the seat is horizontal, placed opposite one another, oriented towards the inside of the seat, and in that the lugs (2) guide the oblique slides (4) of each plate (3) and allow, abutting against the ends of the slides (4 ) to limit the inclination of the seat (5). 3) Assise selon la revendication 1 caractérisée en ce que deux arceaux (9) fixés symétriquement de chaque coté sous le siège (5) reposent sur les ergots (2) qui guident le déplacement circulaire des arceaux (9) et limitent l'inclinaison du siège (5) en butant sous celui-ci. 3) Seat according to claim 1 characterized in that two arches (9) symmetrically fixed on each side under the seat (5) rest on the pins (2) which guide the circular movement of the arches (9) and limit the inclination of the seat (5) abutting under it. 4) Assise selon la revendication 3 caractérisée en ce qu'un ergot (11) est positionné sur la face intérieure de chaque arceau (9) rendant l'assise (5) dépendante des supports fixes (12). 4) Seat according to claim 3 characterized in that a lug (11) is positioned on the inner face of each hoop (9) making the seat (5) dependent on the fixed supports (12). 5) Assise selon l'une quelconque des revendications précédentes caractérisée en ce que le siège comporte une partie pentue (5a) fortement accentuée située à l'endroit même où se trouveront les cols de fémurs d'un utilisateur assis sur ce siège.  5) Seat according to any one of the preceding claims, characterized in that the seat has a steep portion (5a) strongly accentuated located at the same place where the necks of the femurs of a user seated on this seat will be located.
FR909007686A 1990-06-15 1990-06-15 MECHANISM ALLOWING AN ERGONOMIC SEAT TO TILT INTO THE WORKING POSITION AND LISTENING POSITION. Expired - Fee Related FR2663211B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR909007686A FR2663211B1 (en) 1990-06-15 1990-06-15 MECHANISM ALLOWING AN ERGONOMIC SEAT TO TILT INTO THE WORKING POSITION AND LISTENING POSITION.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR909007686A FR2663211B1 (en) 1990-06-15 1990-06-15 MECHANISM ALLOWING AN ERGONOMIC SEAT TO TILT INTO THE WORKING POSITION AND LISTENING POSITION.

Publications (2)

Publication Number Publication Date
FR2663211A1 true FR2663211A1 (en) 1991-12-20
FR2663211B1 FR2663211B1 (en) 1994-08-12

Family

ID=9397801

Family Applications (1)

Application Number Title Priority Date Filing Date
FR909007686A Expired - Fee Related FR2663211B1 (en) 1990-06-15 1990-06-15 MECHANISM ALLOWING AN ERGONOMIC SEAT TO TILT INTO THE WORKING POSITION AND LISTENING POSITION.

Country Status (1)

Country Link
FR (1) FR2663211B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0566192A1 (en) * 1992-04-09 1993-10-20 Ligtvoet Products B.V. A wheelchair
WO2001091615A1 (en) * 2000-05-30 2001-12-06 Thomas Walser Sprung chair feet and weight centring seat mechanism

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB327439A (en) * 1928-12-05 1930-04-07 Richard Hill An improved chair, lounge or the like
US3999799A (en) * 1974-03-11 1976-12-28 Daswick Alexander C Adjustable reclining chair, and method
FR2526288A1 (en) * 1982-05-07 1983-11-10 Ring Mekanikk As Self-locking tilt mechanism for adjustable office chairs - allows comfortable adjustment through seat moving along curve whose centre lies in centre of gravity of user
DE8629471U1 (en) * 1986-11-04 1986-12-18 Eilersen, Jens Juul, Valbonne, Fr
US4919481A (en) * 1989-01-03 1990-04-24 Garabedian Edward A Multiple positionable chair construction

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB327439A (en) * 1928-12-05 1930-04-07 Richard Hill An improved chair, lounge or the like
US3999799A (en) * 1974-03-11 1976-12-28 Daswick Alexander C Adjustable reclining chair, and method
FR2526288A1 (en) * 1982-05-07 1983-11-10 Ring Mekanikk As Self-locking tilt mechanism for adjustable office chairs - allows comfortable adjustment through seat moving along curve whose centre lies in centre of gravity of user
DE8629471U1 (en) * 1986-11-04 1986-12-18 Eilersen, Jens Juul, Valbonne, Fr
US4919481A (en) * 1989-01-03 1990-04-24 Garabedian Edward A Multiple positionable chair construction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0566192A1 (en) * 1992-04-09 1993-10-20 Ligtvoet Products B.V. A wheelchair
WO2001091615A1 (en) * 2000-05-30 2001-12-06 Thomas Walser Sprung chair feet and weight centring seat mechanism

Also Published As

Publication number Publication date
FR2663211B1 (en) 1994-08-12

Similar Documents

Publication Publication Date Title
BE1003930A3 (en) Ergonomic seat.
CH626522A5 (en) Tilting mounting for a chair seat
CH670384A5 (en)
FR2547195A1 (en) SURGICAL HEAD
LU87088A1 (en) TILT CONTROL ARRANGEMENT FOR OFFICE SEATS
FR2721811A1 (en) RELAXATION ARMCHAIR
FR2501496A1 (en) SUPPORT OF DENTISTRY EQUIPMENT
EP0274330A1 (en) Standing-up and sitting-down device, especially for chairs or fixed or removable seats
EP1488770B1 (en) Stand-up chair with self-modifying tilting of the backrest
FR2505158A1 (en) Arm chair with adjustable arm rests - consists of seat mounted on legs, with adjustable height uprights supporting movable elbow-rests
FR2663211A1 (en) Mechanism enabling an ergonomic seat [sitting portion of a seat] to tilt between a working position and a listening position
FR2585240A1 (en) Device for rotation through +/- 180 DEG allowing surgical operations to be performed in ventral and dorsal decubitus using a conventional operating table
BE817904A (en) Chair with adjustable seat and back - linkage allows each to take up independent positions for maximum comfort
FR2594663A1 (en) Chair or armchair having a slope which is variable and synchronised with the seat and the backrest
CH670203A5 (en)
BE632123A (en)
WO2018104595A1 (en) Anterior support device for the lower limbs
EP3801136B1 (en) Physiological seat device
FR2692478A3 (en) Seat fitted with a device for massaging the soles of the feet.
EP0028992B1 (en) Mounting of a member with adjustable inclination on a support, especially of a back-vest on a base, and child's seat making use of this mounting
FR2673527A1 (en) CORSET FORMING SEAT FOR PHYSICAL HANDICAP, ESPECIALLY FOR CHILDREN.
FR2685804A1 (en) Rest for the arms and hands of a user of a keyboard instrument or apparatus or one for drawing or knitting
FR2575074A1 (en) Gymnastics apparatus or apparatus for re-education of the lower limbs
EP0688521B1 (en) Seating furniture with multiple positions
FR2625595A1 (en) Device for inclining a keyboard

Legal Events

Date Code Title Description
ST Notification of lapse